Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11364942 | Stop announcement system and method therefor | Tak Ko Chan, Tsz Kiu Jason Chiu | 2022-06-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11364942 | Stop announcement system and method therefor | Tak Ko Chan, Tsz Kiu Jason Chiu | 2022-06-21 |